Automakers looking for moderately priced ways to meet fuel economy targets are likely to pair turbochargers with smaller engines, thereby maintaining performance. Today’s turbochargers have parts designed to withstand the heat of the exhaust gases that power them and are made with finer tolerances to improve reliability.
Background
Turbochargers are auxiliary air pumps powered by the force of exhaust gases
Can improve efficiency of engines by as much as 20%